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作者选择了苏丹北部吉齐拉区的5个村及南部博尔区调查疟疾种类,并观察群众性药物预防的效果。吉齐拉是苏丹最大的农业区,有耕地面积3百万亩,主要依靠尼罗河的分支进行灌溉,该区的雨季为每年7～9月,疟疾流行高峰为10月。博尔区则主要靠每年3～12月份的丰富雨量,居民为营游牧生活的丁卡部落。分两个阶段进行调查和观察,第1个阶段检查每个居民的厚、薄血膜
The authors selected five villages in the Gisela district of northern Sudan and the Bor area in the south to investigate the types of malaria and to observe the effects of mass drug prevention. The largest agricultural zone in Sudan, Gizila has 3 million acres of arable land, irrigated mainly by the Nile branch, which rains every July to September and the malaria epidemic peaked in October. The Boer district mainly relies on the abundant rainfall of March to December every year and the residents are Dinka tribes who live in nomadic life. In two phases of investigation and observation, the first phase of inspection of each resident’s thick, thin blood film